I will be starting Cellcept for ISDL from rheumatoid arthritis x 30years.Was just hospitalized with pneumonia. Now on oxygen at home. Hoping this works as the alternative was IMURAN and high dose Prednisone. With this I can go down on the steroid. It may also help the RA. Have to wait and see. I was on XELJANZ when I was diagnosed and became so ill and hospitalized. A shame as the Xeljanz was the ULTIMATE best med for me with RA that I have used and i have used all of them inclusing infusions. I will post back as I see there isn't much on here regarding Cellcept and ISLD from RA.